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arXiv · 1811.05572

High Resolution Near-Infrared Spectroscopy of Cool Dwarf Stars

Andrea Dupree·Nancy Brickhouse·Jonathan Irwin·Robert Kurucz·Elisabeth Newton
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Abstract

We present results from a near infrared survey of the He I line (10830 Angstrom) in cool dwarf stars taken with the PHOENIX spectrograph at the 4-m Mayall telescope at Kitt Peak National Observatory. Spectral synthesis of this region reproduces some but not all atomic and molecular features. The equivalent width of the He line appears directly correlated with the soft X-ray stellar surface flux except among the coolest M dwarf stars, where the helium is surprisingly weak.

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Andrea Dupree, Nancy Brickhouse, Jonathan Irwin, Robert Kurucz, Elisabeth Newton. 2018-11-13. High Resolution Near-Infrared Spectroscopy of Cool Dwarf Stars. https://doi.org/10.5281/zenodo.1491756

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